Fig. 4From: The exosome journey: from biogenesis to uptake and intracellular signallingExosome signalling by direct interaction or membrane fusion. Upon reaching the target cells, a membrane receptors within the exosome surface and plasma membrane of target cells can interact inducing downstream signalling cascade in the recipient cell. b Exosomes membrane can also fuse with the plasma membrane and release their contents into the cytosol directlyBack to article page